AP Chemistry: Class 72

Dates

• Period E: Wednesday, February 27th
• Period F: Wednesday, February 27th

New Material Big Idea: What are the calculations associated with solutions? (molality, FPD, BPE, dilutions)

• Example 1: If I add 45 grams of sodium chloride to 500 grams of water, what will the melting and boiling points be of the resulting solution?  K_b(H₂O) = 0.52 ⁰C/m and K_f(H₂O) = 1.86 ⁰C/m.
• Example 2: Which solution will have a higher boiling point: a solution of 105 grams of sucrose (C₁₂H₂₂O₁₁) in 500 grams of water or a solution of 35 grams of sodium chloride in 500 grams of water?
• Example 3: Explain how to make 500.0 mL of 1.0 M NaCl from 2.0M stock solution
• Example 4: Determine the mass of solute in 50 grams of water contained in a 1.0 m CH₃OH solution

Homework

• Ch. 12 (17, 19, 55, 62, 72)